COSMOS 2251 DEB, 35891
Orbit data source: Space-Track
COSMOS 2251 DEB, 35891 is space debris in LEO originally from a launch on Wed, 16 Jun 1993 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). The debris from Iridium 33, an American commercial communications satellite, has been tracked extensively since its accidental collision with the defunct Russian satellite Cosmos 2251 in 2009. This event, occurring at high speed in low Earth orbit (LEO), generated thousands of pieces of space debris, significantly increasing the risk of further collisions. The Iridium 33 debris cloud has impacted space traffic management and orbital debris mitigation strategies, making it a subject of ongoing study in space situational awareness.
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35891 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 week ago
TLE from 1 week ago
0 COSMOS 2251 DEB
1 35891U 93036AUE 26250.25366097 .00213392 00000-0 12355-2 0 9998
2 35891 73.9700 222.2369 0021866 259.4374 100.4390 15.77552200713829Epoch: 2026-09-07T06:05Z
TLE epoch observation values (Epoch: 2026-09-07T06:05:16.307Z)
Latitude
-0.00003°
Longitude
144.58187°
Altitude
342.847 km
Speed
7.702 km/s
True Right ascension
14h 48m 56s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
17:32:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
349.533 km
Perigee altitude
320.176 km
Semi-major axis
6,712.991 km
Eccentricity
0.00219
Inclination
73.97°
RAAN
222.2369°
Arg. of periapsis
259.4374°
True anomaly
100.6853°
Mean anomaly
100.439°
Eccentric anomaly
100.56216°
Mean motion
3.94611 °/min
Orbital period
91.23 mins
BSTAR
0.0012355
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Other satellites on launch #36 in the year 1993 (1993-06-16 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 2251 DEB Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-09-15 07:43:00.051Z | 1.068° NNE | 2026-09-15 07:45:00.051Z | 73.233° E | 41.245° | 2026-09-15 07:47:00.051Z | 137.608° SSE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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